/* paint.c -- 使用条件运算符 */
#include <stdio.h>

#define COVERAGE 350	// 每罐油漆可刷的面积（单位：平方英尺）

int main(void)
{
	int sq_feet;
	int cans;
	printf("Enter number of square feet to be painted:\n");
	while (scanf("%d", &sq_feet) == 1)
	{
		cans = sq_feet / COVERAGE;
		cans += ((sq_feet % COVERAGE == 0)) ? 0 : 1;
		printf("You need %d %s of paint.\n", cans, cans == 1 ? "can" : "cans");
		printf("Enter next value (q to quit):\n");
	}
	return 0;
}